Precision Seed Delivery System with Sensor Feedback Control
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Solution Overview
Problem
Agricultural planting machines face challenges in maintaining precise seed spacing and placement due to variations in air pressure, seed size, shape, and foreign materials, leading to irregularities in seed delivery, which can decrease yield potential and field area utilization.
Innovation Solution
An agricultural machine equipped with a seeding system that includes a seed transport mechanism, a sensor to detect seed presence, and a processing system to track seed movement and generate motor operating parameters for precise seed release, ensuring accurate seed placement based on tracked positions and target parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gravity drop seed delivery system is used, then the system is simple and reliable, but precise seed placement and spacing cannot be achieved due to variations in air pressure, seed size, shape, and foreign materials
Solution Approach 1:
The patent replaces the passive gravity drop mechanical system with an active controlled system using sensors to detect seed presence and motors to control transport mechanism speed, enabling precise seed placement while maintaining reliability through electronic control
Solution Approach 2:
The patent implements feedback control by using sensors to detect seed presence and position, then using this information to adjust motor speed and control seed release timing, ensuring precise spacing despite variations in seed properties or air pressure
2Adaptability or versatility
If separate actuators are used for metering system and delivery system, then the systems can operate independently, but coordination difficulty and system complexity increase
Solution Approach 1:
The patent merges the control of the metering system and delivery system by using a common processing system that coordinates both actuators based on seed detection feedback, reducing coordination complexity while maintaining operational independence
Solution Approach 2:
The processing system performs multiple functions including seed detection, position tracking, speed control, and release timing coordination, allowing a single system to manage both actuators efficiently without requiring separate control systems
3Productivity
If traditional seed delivery systems are used without tracking, then the device complexity is low, but seed spacing irregularities occur leading to decreased yield potential
Solution Approach 1:
The patent replaces traditional mechanical seed delivery without tracking with an electronically controlled system using sensors and motors to track and control seed movement, achieving precise spacing and improved yield potential
Solution Approach 2:
The system uses sensors to automatically detect seed presence and position, then self-regulates motor speed and release timing without external intervention, maintaining precise spacing while managing system complexity through autonomous operation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves precise seed placement and spacing, reducing seed deviation and increasing yield potential by accurately tracking and controlling seed movement and release, thereby enhancing field area utilization.
Implementation Method 1
a seed sensor configured to sense presence of the seed at a first location along the transport route
Implementation Method 2
a motor configured to drive movement of the seed transport mechanism to transport the seed from the first location to a second location in which the seed is released
Implementation Method 3
The seeds can be biased into the seed apertures in the seed metering system using air pressure (such as a vacuum or a positive air pressure differential)
Implementation Method 4
Metered seeds from the seed metering system are dropped into the seed tube and fall (via gravitational force) through the seed tube into the seed trench
Data Source
AI summary
An agricultural machine includes a seeding system having a seed transport mechanism configured to transport a seed along a transport route, a seed sensor configured to sense presence of the seed at a first location along the transport route, and a motor configured to drive movement of the seed transport mechanism to transport the seed from the first location to a second location in which the seed is released from the seed transport mechanism. A processing system is configured to track a position of the seed along the transport route based on an indication of the sensed presence of the seed at the first location and detected movement of the seed transport mechanism, and generate a motor operating parameter based on the tracked position of the seed and a target parameter for releasing the seed. The motor of the seeding system is operated based on the motor operating parameter.